28667208 has 32 divisors (see below), whose sum is σ = 72079200. Its totient is φ = 9500928.

The previous prime is 28667207. The next prime is 28667213. The reversal of 28667208 is 80276682.

It is not an unprimeable number, because it can be changed into a prime (28667201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960 + ... + 7632.

It is an arithmetic number, because the mean of its divisors is an integer number (2252475).

Almost surely, 2^28667208 is an apocalyptic number.

It is an amenable number.

28667208 is an abundant number, since it is smaller than the sum of its proper divisors (43411992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28667208 is a wasteful number, since it uses less digits than its factorization.

28667208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861 (or 6857 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 28667208 is about 5354.1766874096. The cubic root of 28667208 is about 306.0519370171.

The spelling of 28667208 in words is "twenty-eight million, six hundred sixty-seven thousand, two hundred eight".